Yes, as a matter of fact. It always struck me as wasteful to lock up a potential labour source. If they are too dangerous to work, they should be eliminated. Or, perhaps, given an option of exile to some remote area where they can do as they please (maybe an area in Alaska), but if they leave the cordoned area, they are shot on site. If they were to accept such an offer, a chip of some sort would be implanted to track them in the event they escaped. Or maybe create a large scale military unit comprised of criminals for front line use (I think the US army is already granting a number of "moral waivers"). Impractical suggestions, but the status quo of the penal system is broken beyond repair.
The whole idea of a penitentiary was to reform those imprisoned, but that seems to be the opposite of what is achieved.
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"The world is only as deep as we can see. This is why fools think themselves profound." - R. Scott Bakker, The Judging Eye